Cut-out for telephones



2 Sheets-Sheet 1.

(No Model.)

O. D. WRIGHT & G. A. FISHER.

I GUT-OUT FOR TELBPEONES. 110,288,908. Patented Nov. 20, 1883.

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INVENTOR WITNESSES: A?) Wm M, M 4 Q 25 ATTORNEYS.

R. PETERS, Pma-Lnm mr. \Vathingtam 11C.

(N0 Mmiel.) 2 Sheets-Sheet 2.

O. D. WRIGHT 82: G. A; FISHER. OUT-OUT FOR TELEPHONES. No 288,908. Patented Nov. 20. 1883.

ATTORNEYS.

can be broken at any time, and so that the in- '3 is a sectional plan view of the same. Fig. 4

UNITED STATESQ CHARLES D. YVRIGHT AND CHARLES A. FISHER, OF PETERSBURG, ILLINOIS.

TELEPHONES.

SPECIFICATION forming part of Letters Patent No. 288,908, dated November 20, 1883.

Application filed March 31, 1883. (No model.)

To all whom it 12mg concern:

Be it known that we, CHARLES D. Wino-Hr and CHARLES A. FISHER, both of Petersburg, in the county of Menard and State of Illinois, have invented anew and Improved GutOut for Telephones, ofwhich the following is a full, clear, and exact description.

The object of our invention is to provide a new and improved device for cutting out all the telephones on a line between the two telephones which are to be in communication.

The invention consists in a telephone cutout constructed with a clock-work mechanism which is released by means of an electromagnet as soonas the current passes through the instrument, whereby a lever resting on a notched wheel of the clock'work mechanism is one of the binding-posts, whereby the current will be short-circuited, and will pass through the instrument without passing through the transmitter or receiver, whereby the telephone can be cut out. The electro-magnet which releases the clock-work mechanism also sounds a belh The instrument is provided with a switch, by means of which the short circuit strument will. not be cut out. The instrument is provided with a revolving hand and a dial, which indicate when the instrument is cut out.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures. Figure l is a longitudinal sectional elevation of a telephone-box provided with our improved cut-out mechanism. Fig. 2 is a rear elevation of the upper part of the box. Fig.

is a face view of the dial on the front surface of the box.

The line-wires c l) are attached to the hind ing-posts A B, on a box, 0, secured on the telephone-box D. By means of a wire, 0, the binding-post A is connected with one end of the coil of apolarized magnet, E, in the box D, the other end of which coil is connected by means of a wire, (I, with the binding-post F, connectedby means of awire, c, with one pole of the receiver G, the other pole of which is connected by means of a wire, e, with a post, F, which post F is connected by means of a wire, f, with the fixed end of a spring, H, the

free end of which spring rests against a contact-button, J, which is connected by means of a wire, with a lever, 131, having one end pivoted in the casing L of a clock-work in the box 0. The free end of theleverK is adjoin ing to the free end of a spring, M, fixed to the under surface of the top of the box 0, which spring M is connected by means of a wire, 71, with the binding-post A. The spring is connected by means of a wire, j, with the binding-post B. A pin, N, provided with a head at each end, passes loosely through the box D, and has one end resting against the spring H. The outer head of the pin N is beveled, and adjoining to the same a lever, O, is pivoted onthe outer surface of the side of the box. If the said lever is brought over the outerhead of the pin, it pushes the pin in ward, and thereby presses the free end of the spring H from the contact-button J and breaks the circuit. The rocking armature 1 of the polarized magnet E is provided with an arm, Q, provided at its outer end with aball, Q, which is adapted to strike against two bells, R, fastened on the box. A lever, S, is pivoted in the casing L of the clock-work in the box 0, and terminates in a series of arms, S, S, and S, provided at the ends with hooks, which pass into notches in the different wheels of the clock-work mechanism and lock the same in position. The lever K is provided with a tooth, I, which passes into a notch, m, in the periphery of a wheel, T, of the clock-work. The spring it draws the lever K downward, so that the tooth Zwill always be pressed against the periphery of the said wheel. \Vhen the tooth Z is in the notch m, the end of the lever K is not in contact with the spring M. The shaft 0, on which the disk or wheel T is mounted, projects from the front of the casing C, and is provided with a hand, 8, which revolves over a dial, t, on the front of the casing. An ordinary electro-magnet will answer as well as a polarized one, the latter being in general use for making calls. o start our machines with them to save the expense of an extra magnet.

The operation is as follows: The current from the line-wire a enters at the binding-post A, passes through the wire'c, through the coil of the polarized magnet E, through the wire d, the wire 0, the receiver G, the wire 6, the post F, the wire f, the spring H, the wire j, and the binding-post B, then off through the line-wire 7). The magnet Ewill be excited and the armature P will be rocked, whereby the arm Qwill swing in the direction of the arrow a, and the ball Q will strike against one of the bells R, and will sound the same. At the same time the lower end of the lever S will be pushed in the direction of the arrow a, and the hooks at the ends of the arms S S S will be drawn out of the notches in the wheels of the clock-work mechanism, which will be released. The disk or wheel T will be revolved in the direction of the arrow 1), Fig. 2, and thereby the lever K will be raised, and will be pressed against the end of the spring M until the wheel T has made one revolution and the notch in is again under the tooth Z. When the notch m arrives under the tooth Z,the spring it draws the tooth Zback into the notch again, and the contact of the arm K with the spring M is broken. As soon as the lever K contacts with the spring M a short circuit will be formed as follows: from the binding-post A through the wire. h, the spring M, the lever K, the wire 9, the contact-button J, the spring H, the wire 9', and the post B, and off through the line-wire b. The instrument G and the magnet are thus cut out, for the latter circuit presents less resistance to the current than the circuit previously described. A spring, i, draws the lower end of the lever S in the inverse direction of the arrow a, so that when the wheel T has made one revolution the ends of the arms S, S and S will snap into the corresponding notches of the wheels of the clock-work mechanism. In the same manner .as described above, all the telephones 011 a line are cut out. At that telephone at which the message is to be received the current is not to be short-circuited. To prevent this the pin N is pushed inward, and held so by means of the lever 0, whereby the contact between the spring H and the contact-button J will be broken, and the current will be forced to pass through the wire 0, the magnet E, the instrument, the wire f, the wire j, the post B, and the wire I). The shaft 0 revolves with the disk or wheel T, and the hand 8 revolves with the said shaft 0. By observing the position of the hand 8 on the dial,a person can tell how long his instrument will be cut out.

By means of the above-described cutout, the resistance of the line is reduced materially, and no local battery is required for cutting out the instrument. A further advantage of the above-described device is, that the call-bell is sounded when the instrument is cut out.

Having thus fully described our invention, we claim as new and desire to secure by Letters Patent- 1. A telephone cut-out made substantially as herein shown and described, and consisting of amagnet and aclock-work mechanism adapted to be released automatically by the current passing through the instrument, combined with a lever which is adapted to be brought in contact with a spring or button connected with one binding-post of the line-wires,which lever is connected with the other binding-post of the line-wires, whereby a" circuit of less re sistance than that which passes through the instrument will be formed, and the instrument will be practically cut out, as set forth.

2. In a telephone cut-out, the combination, with a telephone-receiver, of a clock-work mechanism, a pivoted lever for locking the clock-work mechanism, an electro magnet provided with devices for moving the said lever in such a manner that it releases the clockwork mechanism, a spring connected with one binding-post of the line-wires, a lever connected with the other binding-post of the line wires, and adapted to be acted upon by the clock-work mechanism and brought in contact with the above-mentioned spring, and of devices for breaking the electrical connection between the lever pivoted in the clock-work mechanism and one of the binding-posts, substantially as herein shown and described, and for the purpose set forth.

3. In a telephone cut-out, the combination, with a receiving-instrument, of an electromagnet connected with the line-wires, a clockwork mechanism, a lever for locking theclockwork mechanism, which lever is adapted to be moved by the armature of the electro-magnet, the spring M, connected with one binding-post, the lever K, pivoted in the clockwork mechanism and connected with the contact-button J, the spring H, resting against the contact button J and connected with the binding-post B, the pin N, and the lever O, substantially as herein shown and described, and for the purpose set forth.

4. In a telephone cutout, the combination, with a receiving-instrument, of the electromagnet E, the rocking armature 1?, the arm Q, having a ball, Q, at the end, the bells B, and a lever, S, for locking the clock-work mechanism, which lever S is adapted to be moved by the arm Q, substantially as herein shown and described, and for the purpose set forth.

5. In a telephone cut-out, the combination,

with a receiving-instrument, of a clock-work mechanism provided with a wheel, T, having a notch,-m, the lever K, having a tooth, Z, the

spring 12, the spring M, connected with the binding-post A,wires for connecting the lever K with the binding-post B, and an electromagnet for releasing the clock-work mechanism, substantially as herein shown and described, and for the purpose set forth.

6. In a telephone cut-out, the combination, with a leceiviiiginstrument,, of a clock-work mechanism provided with the wheel T, having anotch, m, the lever K, having a tooth, ism, substantially as herein shown and de- Z, the spring n, the hand 8 0n the end of the scribed, and for the purpose set forth.

shaft 0, the dial 1?, over which the-hand 8 re- CHARLES DOUGLAS WRIGHT.

valves, the spring M, connected with the CHARLES A. FISHER. 5 binding-post A, wires for connecting the lever Witnesses:

K with the'binding-post B, and an electro- ED 0. FISHER,

magnet for releasing the clock-Work meehan- D. M. BONE. 

